Related Experiment Video

Updated: Sep 28, 2026

Through-the-Wall Blood Sampling Method to Minimize Sleep Disruption in Clinical Settings
06:39

Through-the-Wall Blood Sampling Method to Minimize Sleep Disruption in Clinical Settings

Published on: June 13, 2025

[Diurnal changes in blood pressure and their consequences]

Ede Kékes1

  • 1International Medical Services, Kardiológia, Budapest.

Orvosi Hetilap
|November 8, 2002
PubMed

Insights

Circadian rhythm influences daily blood pressure and heart rate, increasing risks for stroke and sudden death, especially in the morning. Effective antihypertensive drugs manage blood pressure fluctuations throughout the day.

Area of Science:

  • Cardiology
  • Chronobiology
  • Hypertension Research

Context:

  • Circadian rhythms significantly impact cardiovascular health.
  • Hypertension and ischemic heart disease patients exhibit dangerous daily blood pressure and heart rate alterations.
  • Morning hours represent a critical period for adverse cardiovascular events.

Purpose:

  • To analyze daily blood pressure and heart rate variations linked to circadian rhythms.
  • To investigate the association between these variations and severe clinical outcomes.
  • To highlight the role of sympathetic nervous system overactivity.

Summary:

  • Daily blood pressure variability and decreased heart rate variability, including loss of nocturnal dipping, are linked to sympathetic overactivity.
  • Sudden blood pressure surges at any time of day pose serious risks.
  • High through/peak ratio indicates effective 24-hour blood pressure control by antihypertensive medication.

Impact:

  • Understanding circadian influences can optimize hypertension management.
  • Continuous blood pressure control is crucial for preventing cardiovascular events.
  • This research emphasizes the importance of consistent antihypertensive drug efficacy.

More Related Videos

Long-term Blood Pressure Measurement in Freely Moving Mice Using Telemetry07:54

Long-term Blood Pressure Measurement in Freely Moving Mice Using Telemetry

Published on: May 17, 2016

Related Concept Videos

Alterations in Blood Pressure01:30

Alterations in Blood Pressure

Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart beats)...
Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response01:15

Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response

Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
Factors affecting Blood pressure01:28

Factors affecting Blood pressure

Several physiological and lifestyle factors influence blood pressure (BP). Understanding these factors is crucial as they are significant in patient education and blood pressure management.
Physiological Factors:
Hypertension and Regulation of Blood Pressure01:18

Hypertension and Regulation of Blood Pressure

Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a stethoscope.
Blood Pressure Imbalances and Circulatory Shock01:24

Blood Pressure Imbalances and Circulatory Shock

Disorders affecting blood volume, vascular tone, or vascular function can disrupt vascular homeostasis, including conditions like hypertension, hemorrhage, and shock.
Blood Pressure: Hypertension and Hypotension
Normal blood pressure is 120/80 mm Hg. Elevated blood pressure is 120-129/under 80 mm Hg. Hypertension, warranting treatment at 130/80 mm Hg, is often asymptomatic and can lead to severe cardiovascular events, aneurysms, peripheral arterial disease, chronic renal disease, or cardiac...